What can I say? This has to be the most useful VST tool I've ever owned. I use it in every session. The user Interface is sweet and simple. Not much time is needed to configure it with great end results. The sound is the best part because it sounds like anything you want it to sound like. I usually run it through Trilogy through my guitar for instant, editable, bass tracks. There are few features, most of them are just to enhance the performance of the audio to midi conversion. I would like to see a pitch bend feature soon though! The docs are easy to understand, although it is easy without them. WIDI VST is automatically set at the perfect preset for guitar, which i use it for. It uses a minimum of resources and never crashes. I've tried every audio to midi application out there and none have impressed me as much as WIDI. I owned a roland GR-1, which has just been sold to a shop! If you are looking to convert audio to midi this plugin is definatly worth the 60 bucks. Hell, i'd have bought it for twice that. It's also the only one that is polyphonic!